diff --git a/Suli/13.b/Backend/2024. 10. 24/Vera.ttf b/Suli/13.b/Backend/2024. 10. 24/Vera.ttf
new file mode 100644
index 0000000..58cd6b5
Binary files /dev/null and b/Suli/13.b/Backend/2024. 10. 24/Vera.ttf differ
diff --git a/Suli/13.b/Backend/2024. 10. 24/head.php b/Suli/13.b/Backend/2024. 10. 24/head.php
index 510b44f..bb033c2 100644
--- a/Suli/13.b/Backend/2024. 10. 24/head.php	
+++ b/Suli/13.b/Backend/2024. 10. 24/head.php	
@@ -1,6 +1,17 @@
 <?php
     session_start();
     $celkonyvtar = "kepek/";
+
+    function vizjeljpg($kepfajl, $celkonyvtar) {
+        $img = imagecreatefromjpeg($kepfajl);
+
+        $wmcolor = imagecolorallocatealpha($img, 255, 255, 255, 25);
+
+        imagefttext($img, 18,0,0,24, $wmcolor, "Vera.ttf", "WATERMARK");
+
+        imagejpeg($img, $celkonyvtar."vizejeles.jpg", 75);
+    }
+
     if ($_SERVER["REQUEST_METHOD"] == "POST") {
         if (!is_dir($celkonyvtar)) {
             mkdir($celkonyvtar);
@@ -37,7 +48,9 @@
             if (move_uploaded_file($_FILES["kepfajl"]["tmp_name"], $celfajl) == true) {
                 if ($vanmar == 0) {
                     $_SESSION["kepek"][] = $celfajl;
+                    vizjeljpg($celfajl, $celkonyvtar);
                 }
+
             }
         }
     }
diff --git a/Suli/13.b/Backend/2024. 10. 24/kepek/orangutan.jpg b/Suli/13.b/Backend/2024. 10. 24/kepek/orangutan.jpg
new file mode 100644
index 0000000..0503f8a
Binary files /dev/null and b/Suli/13.b/Backend/2024. 10. 24/kepek/orangutan.jpg differ
diff --git a/Suli/13.b/Backend/2024. 10. 24/kepek/vizejeles.jpg b/Suli/13.b/Backend/2024. 10. 24/kepek/vizejeles.jpg
new file mode 100644
index 0000000..1765df4
Binary files /dev/null and b/Suli/13.b/Backend/2024. 10. 24/kepek/vizejeles.jpg differ
diff --git a/Suli/13.b/Backend/2024. 11. 18/obj.php b/Suli/13.b/Backend/2024. 11. 18/obj.php
new file mode 100644
index 0000000..6c01011
--- /dev/null
+++ b/Suli/13.b/Backend/2024. 11. 18/obj.php	
@@ -0,0 +1,41 @@
+<?php
+    class Tanulo {
+        public $nev;
+        public $kor;
+        public $jegyek = [];
+
+        public function __construct($nev, $kor) {
+            $this->nev = $nev;
+            $this->kor = $kor;
+        }
+
+        public function adjegy($jegy) {
+            $this->jegyek[] = $jegy;
+        }
+
+        public function atlagkiszamit() {
+            if (count($this->jegyek) == 0) {
+                return 0;
+            }
+
+            else {
+                return array_sum($this->jegyek) / count($this->jegyek);
+            }
+        }
+
+        public function adatkiir() {
+            $atlag = $this->atlagkiszamit();
+            echo "Név: {$this->nev}, Kor: {$this->kor}, Átlag: {$atlag}";
+        }
+    }
+
+    $tan1 = new Tanulo("Kis Péter", 15);
+    $tan1->adjegy(5);
+    $tan1->adjegy(1);
+    $tan1->adjegy(3);
+    $tan1->adjegy(2);
+    $tan1->adatkiir();
+
+
+
+?>
\ No newline at end of file